1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
  25  */
  26 
  27 
  28 /*
  29  * return mount association with meta device
  30  */
  31 
  32 #include <meta.h>
  33 
  34 #include <sys/mnttab.h>
  35 
  36 #include "meta_lib_prv.h"
  37 
  38 /*
  39  * return associated mount point with this mdname_t
  40  */
  41 char *
  42 meta_get_mountp(
  43         mdsetname_t     *sp,
  44         mdname_t        *np,
  45         md_error_t      *ep
  46 )
  47 {
  48         FILE            *mfp;
  49         struct mnttab    m;
  50         char            *mountp = NULL;
  51         char            mnt_mountp[MNT_LINE_MAX];
  52         char            mnt_special[MNT_LINE_MAX];
  53 
  54         /* should have a set */
  55         assert(sp != NULL);
  56 
  57         /* look in mnttab */
  58         if ((mfp = open_mnttab()) == NULL) {
  59                 (void) mdsyserror(ep, errno, MNTTAB);
  60                 return (NULL);
  61         }
  62 
  63         while ((!mountp) && (getmntent(mfp, &m) == 0)) {
  64                 mdname_t        *mnp;
  65 
  66                 if ((m.mnt_special == NULL) || (m.mnt_mountp == NULL))
  67                         continue;
  68 
  69                 if (m.mnt_mountp[0] != '/')
  70                         continue;
  71 
  72                 if ((strcmp(m.mnt_fstype, "nfs") == 0) ||
  73                     (strcmp(m.mnt_fstype, "autofs") == 0) ||
  74                     (strcmp(m.mnt_fstype, "proc") == 0) ||
  75                     (strcmp(m.mnt_fstype, "tmpfs") == 0) ||
  76                     (strcmp(m.mnt_fstype, "lofs") == 0) ||
  77                     (strcmp(m.mnt_fstype, "rfs") == 0) ||
  78                     (strcmp(m.mnt_fstype, "fd") == 0))
  79                         continue;
  80 
  81                 (void) strcpy(mnt_mountp, m.mnt_mountp);
  82                 (void) strcpy(mnt_special, m.mnt_special);
  83                 if ((mnp = metaname(&sp, mnt_special, UNKNOWN, ep)) == NULL) {
  84                         mdclrerror(ep);
  85                         continue;
  86                 }
  87 
  88                 if (np->dev == mnp->dev) {
  89                         mountp = mnt_mountp;
  90                 }
  91         }
  92 
  93         /* return success, if found */
  94         return (mountp? Strdup(mountp): NULL);
  95 }